D-Mannose Powder is a urinary support supplement that may be helpful for recurrent UTI. D-Mannose is a naturally occurring sugar, found in some plants and fruits. Research has shown that D-Mannose may provide urinary tract support by inhibiting the attachment of E. coli bacteria to the urinary tract. How D-Mannose is thought to work: Studies outside the body (in vitro) have demonstrated that E. coli may bind to D-Mannose molecules, rather than binding to the bladder wall. The free-floating molecules may then be flushed from the urinary tract during urination. Proudly Packaged AND Sourced in the USA. WCM brand is proud to offer one of the only US-Sourced D-Mannose Powder Supplements on the market for Urinary Tract Support! Ingredients: 100% Pure, Non-GMO D-Mannose Powder. Ingredients sourced: USA Vegan and naturally free from gluten, soy, dairy and yeast.